Village LW-160, User Manual And Reference Manual

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OPERATION
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VMT - v. JUNE 2008
4.0 OPERATION
4.1a TO START THE LITTLE WONDER FRAME UNIT
Figure 4.1: Little Wonder FRAME Instrument Details.
Step 1:
Turn the sample valve to SAMPLE position to direct the flow of water to the sample line.
Step 2:
Turn High Pressure Bypass Valve (Black Valve) to CLEANING POSITION , counter-clockwise. This will
help prime the system by releasing air. Verify the Cleaning Valve is positioned to NORMAL discharge.
Also check the gray Freshwater Flush Valve (Refer to Figure 2.4) is positioned for seawater intake,
NOT freshwater.
FAILURE TO OPEN THE HIGH PRESSURE BYPASS VALVE, WHICH IS REQUIRED TO RELEASE
ANY TRAPPED AIR, COULD RESULT IN HYDRAULIC SHOCK TO THE SYSTEM.
Step 3:
Verify the seawater intake is open at the through-hull. This allows the feed seawater to flow into the unit.
Start-up time can be expedited by temporarily turning the flush valve to freshwater position to fill the
filter housing and prime the system before the RO unit is turned on.
Step 4:
Switch ON the breaker at main breaker panel to power up unit.
Step 5:
Flip power switch ON located on unit’s front face panel, to start the pumps. (Refer to Figure 4.1). On AC
powered units, a separate switchbox allows the boost pump to be started before the HP pump.
Step 6:
Upon initial start-up inspect all plumbing connections in the unit for leakage. Varying temperatures
during shipment may cause plumbing connections to seep when starting the RO unit for the first time.
Secure the unit and repair any leaks before proceeding. Once the leaks are repaired, open the raw
water source and restart the unit.
Step 7:
Gradually turn the High Pressure Bypass Valve (Black Valve) to NORMAL/RO position. The pressure
gauge should rise steadily to a reading of 800 psi.
Step 8:
Observe the system pressure on the High Pressure Gauge. During RO production, the indicated
pressure should be at 800 psi. If the pressure reading is not at 800 psi, adjust the nut on top of the
pressure regulator valve using a wrench until the reading reaches 800 psi.
Step 9:
With the Sample Valve at SAMPLE position, taste the water quality or test it with a hand-held test
meter. If quality is good, turn the Sample Valve over to the vessel’s storage tank.
NOTE: If the RO unit is used for other than seawater purification (in freshwater or brackish water
applications), reduce pressure as necessary to achieve product flow no greater than 120% of
design flow to avoid membrane damage.